Reinforcement for pipes and conduits.



7 w R HUME. REINFORCEMENT FOR PIPES AND CONBUITS.

APPLICATION FILED JAN. II], I916.

Patented Dec. 30,1919.

windin" inner helical winding, longitudinal brace loops extending from end to end of said re infer-cement and partly around the some, and an outer close wound helix.

2. all c 'lindricnl lQ-lfifOl'CGl'l'lQllif01 pipes and conduits, comprising an inner helical winding, lateral brace loops embracing said inner helical winding, longitudinel brace loops extending from end to end 01 saidfrein'l'orceinent, and an outer close wound helix, said lateral ln'zicc loops passing over and unilcigsnccessire strands of the inner helical 23. A cylindrical and conduits, comprising an inner helical winding, lateral windings crossing; said inner helical winding at an :rogle, longitudinal windings angulzirly disposed with respect to the axis of said reinforcen'ient, longitudinal windings parallel to said axis, and a relatively close wound helix forming the outerniost winding of said reinforcement.

l. A reinforcement for pipes and con-- duits, comprising a helical Winding of roletivel y smell pitch, a helical Winding, of rela; tively great. pitch, longitudinal straight wires extending from end toend and perch lel to the axis of the reinforcement, and longitudinal cnrvedwires extending from end to end of the reinforcement and partly around the circumference thereof.

5. A reinforcement for pipes and con.

reinforcement for pipes wires extending from end to end and per- :i-llel to the axis of the reinforcement, and it closely wound outer helical winding.

6. A reinforcement for pipes and con duits, comprising a, helical winding of relatively smell pitch, a helical Winding of relatively greet pitch, longitudinal curved wires extending from end to end of the rein-force- .nient and partly around the circumference thereoinnd a closely Wound outer helical windin f "Z. A reinforcen'ient for pipes and cond ils, comprising a helical Winding,-1ongitu- 'd'inel straight Wires extending from end to end and plli allel to the axis of the rein forceinent, longitudinal curved Wires extendin;';' lroin end'to end of the reinforcement and partly around the circumference thereof, and il closely wound outer helical Winding. 7

Acylindrical reinforcement for pipes and conduits, comprising an inner helical winding of relatively great pitch, a lateral windlng wound in all opposite direction across the firstanentioned winding, longitudinal straight 'WIIGS extending parallel to the axis and from end to end of said rei Ii l'orceincnt, and 'snpplen'iental brace Wires eX- tending from end to end of the reinforce 

